Membrane Keypad 20 Key (Matrix 4x5)

From the shop's description

Membrane (Flexible) Keypad, 4x5 key matrix Pad Size: 75 x 85 x 1mm Cable Length: 104 mm Weight: 9g Connector: Dupont 8 pins, 2.54mm Pitch Mount Style: Self-Adherence Max. Circuit Rating: 35VDC, 100mA Insulation Spec.: 100M Ohm, 100V Operation Temperature: -20 to +40 °C For how to use the keypad with arduino and code, please click here